Current-transmission apparatus for printing-telegraph and other systems



April 1929. a. s. HILTZ ET AL 1,707,522

CURRENT TRANSMISSION APPARATUS FOR PRINTING TELEGRAPH AND OTHER SYSTEMSOriginal Filed May 22, 1926 3 Sheets-Sheet l N I sanvgmtoz 32W; auMZQZ'N I W1 Alpnl 2, 1929. s. s HILTZ ET AL 1,707,522

CURRENT TRANSMISSION APPARATUS FOR PRINTING TELEGRAPH AND OTHER SYSTEMSOngmal Flled May 22, 1926 3 Sheets-Sheet 2 hwgutoz Q. M a. p Wow April2, 1929. G s. HILTZ ET AL 1,707,522

CURRENT TRANSMISSION APPARATUS FOR PRINTING TELEGRAPH AND OTHER SYSTEMSOriginal Filed May 22, 1926 3 Sheets-Sheet 3 Patented Apr. 2,1929. 7

UNITED A E-1S ,rnr o-EFLCE;

. GEORGE s. nrri'rzgor imooxnjr n, NEW'fYORKLAND;WILLIAMT PURCELL, orHOBOKEN,

eooTATIoN ,"rnnnemrn :ooMnANY, or NewYORKQN:Y.,ACORPORATION"-OIESNEWJYORK. V 1 v r CURRENT-TRANSMISSIONLAYBARATUS 1310B,-PRINTING-TELEGEAPH;AND OTHER 1" Original applicationfiled Tiaiay 'zai sze, serial-no; 110,850. Divided and-the aplicationfilednsptemb r 27,1927 .Sefial K052221345. i

, of contacts.

as heretofore;

' or closeup by a single operation,

The present application is a division of our 'co-pending application,Serial'i'No, 110,-

850,.file'dMay. 22,1926 "The present a plication relates particularlytocauk eybo'ard 1 which is -'adaptedjfor use in a printing telegraphsystem.

v More particularly the present invention" .is directed togackeyboardnofla noveltype,

which is particularly f adaptable for use in automatic" sending; ap-ccparatusisueh as a perforated tape controlled I transmitter. 'VVithcertain forms". or; auto-.

conjunction :with 1 an matio sending devices; sunflower I niecha-.IllSlIlS are employed :in

' controllingthe transmitter action by selectlive spots or contacts onthe suiifiower, i provision mate :mad'e. ,for opening and] throw switchwhich when thrown to the left c .(to' theposition shown) connects. theauto-' I wmatic sending, mechanism to control I the ing closing atleastqt'wo separatecircuits to 'he sunflower foreaeh characterwhichistolhej sent.

contemplated the selection of single icommulater or sunflower "spots,and accordingly, each key. heretofore controlledta single pair ,ventiona novel provided contact structure which is adapted; to a open twocircuits. tojtle sunflower instead of one Further obiects o the presenreside 1n-a sunp cation .01.

system; 1 7

fFig'. 2is a planjviewot the keyboardby which manual transmission may beelfected.

Certain of-the parts are br 1showtheeunderly ng'construe isdiagrammatically shown in Fig."- 1. need not beherei'n described'indetail as this "system forms the subject matter of ourfco p ndingapplication, Serial No. 110,850, filed the transmitters {and these.sunflower devices are provided vwith outerlcontacts, and, inner common'contacts. p Due to the pecuiian controlywhioh: theper-f forated type{automatic 7 senderflutilizes for, f

' magnet 105 :ply; Kmains which According to; the present:v 1n- 7 formof control has {been wherein each key vcontrols a dualouter-contacts"markedxletters periodyA at least invention vkeyboardstructure to! the" generalendvthat' ilnanufa'c-c turingg cost-s maybereduced; and to theeigid, 'that the keyboard vwill operate in a more rea nd Vand soon. Wires such as lG'ZY-and "The general system with whichthe 'novel' keyboard is particularly adapted to operate It 'May: 22',1926,; It -is sufiicientto state 44 45-37 genera1ly designate the Contactstructure ofthe perforated tape sender which con-1" trol the sunflowerwhich in turn controls the agnetic: brake or clutch magnet 109,' by

means of ap'clutch relay 110'. @The poie changers"$)2 S)3103- 9 ()v 'and94 send iin ulsesto-thejrelays 9596" and these in turn control theldi-stant ti'cker or receiver- 102 having escapementimagnetsl 1' and apress- Lines 100 and 101 are the supconnect .with a suitable source ofcurrent. 1168' represents double transmitter. land when thrown to the:right cuts outthe automatic sender and cuts 'in'the keyboardwhichitormsthe-subject matteri of' ,7 Y I known manne YThe sunflower comprises B,-C, D, etc 1 which are arranged in sets, each set" compris ng sevencontacts; The

, sets are arranged insuceession and the Vari- .ous respective contactsof one set are con-. nected in; parallel with the; correspondingcontactsin the other sets.- Thusthe contact j designated A iseleetrica'lly connected to I to J a and U; Contact B s connected to :K,O

, I so 115-116 supportedon insulat ng 7 member uponand operatedbyashaft-1 in well", 1

167. are used fofgformingsMh parallel {connections Each respective innerContact through thewiper, is adapted to be connected withuany of the;outer ticontacts ofits particular Jcorrelated setiof router; contacts:'llhus contact Vithin-theouter oontaots A,- etc'. I (are inner contactsmarked 1, 2 3 and A. f

Goff

is arranged for coo )eration with outer contacts marked (letters period)to G- inclusive, contact 2 for H to F inclusive, contact 3 for (lettersperiod) to S inclusive and contact 4 for T to Z inclusive.

Connected to the outer contacts are wires 167 which lead to the sevenleft hand contacts 37 of the perforated control sender,

this section generally designated 37-tal.

Connected to the various and successive inner contacts 1, 2, 3 and darethe wires 2*, which through switch 168 connect to the four right handcont-acts 37 of the section of the sender being generally designated37-4t5.

The keyboard which will now be described comprises an insulating baseplate 200 (Fig. 3) supporting side walls 201 and provided with studs 202which support an insulating cover plate 208. Supported below the coverplate and spaced therefrom by studs 204 is an annular member 205. Theplunger keys 160, which are disposed in an annular row and which are 28in "number, slidably pass through the cover plate 2041 and through theannular member 205 and at their lower ends rest on insulating bars 161which individually span the ends of'inner' and outer annular rows ofinsulated spring contacts 162 and 163.1 These contacts 162 and 163extend radially outwardly and in: wardly from their respective buses.Preferably the insulating bars 161 are connected and securedto the endsof the contacts 162 and 163 in the manner shown in Fig. 3.

connected to current supply main 100, (see Fig. 1) by wire 166,resistance 166" and fuse 166. The outer springs 163 are connected to theouter annular bus'167 which bus in turn is connected to the other sideof the source of current or to main 101 by a circuit traced as follows.Through wire 110,

clutch'relay magnet 110. wire 101 and back to main 101. The buses 167and166 not only form a source of supply for the respective contacts 162 and166 but form a support for these spring contacts themselves.

'T he contacts are preferably screw fastened to the respective annularbuses. Buses 166 and 16? are preterably supported from the base plate200 by means of the studs 206- The' inner fixed contacts 16 1 areconnected in four groups otseven each, each respective groupcorresponding to the respective inner contacts 1, 2, 3 and 1 of thesunflower and the groups are connected individually through wires 168 tothe four right hand upper terminals 168' of the double throw switch 168.The outer contacts 165 are connected in four groups of seven each inexactly the same manner as outer contacts on the sunflower. Forconnecting the various contacts 165 of one set with those of the othersets, connecting wires 167 are provided. Suitable wires 167 also connectthese outer contacts 165 with the'outer contacts of the sunflower andthe wiring 167 also connects to the corresponding left hand sevencontacts 37 of. the mercury contact mechanism which is controlled bytheperforated tape. The other contacts 37 (to the right in Fig. 1) of theperforated record contact mechanism which are disposed to cooperate withthe mercury 45 are connected to the four upper left hand terminals ofswitch 168, while the four upper central ter- 'minals 168 of theswitch168 are connected with the inner group of sunflower contacts 1, 2,3. and 4 by ineansof the wires2 pie viously re'ferredto. It willtherefore, be seen that when the switch 168. is in the left handposition shown in Fig. 1, the keyboard is cut out of the system, butwhen the switch is in the right hand position, the mercury contactmechanism which is controlled by the perforated tape is cut out an'dgthehey board is cut in. Under suchconditions with the perttorated recordcontactmechani'sin cut out, the outer bus'167 then takes the place ofthe mercury 44, theinner bus 166 takes the place of mercury 45, the fourgroups of" inner contacts 16 1, take the place of the fourright handmercury or tape contacts '37 and the four groups of outer contacts 165(each comprising seven contacts) take 1 the place of the seven left handcontactsSZ.

The keys 160 serving to close individually the gaps normally existingbetween 163 and 165 and "between 162 and 1641 take the place of theperforated tape.

"Vhen the switch 168 thrown to the right, the unison contacts15a-155which are connected between the main and the lowermost centercontacts or the switch are thrown out and at the same time, the circuitof the tape feed magnet67 is broken the fifth (from the top) of the lefthand switch terminals. Similarly, the lowermost of the righthandswi'tchterminals and the sixth of the center terminals (countingfrom the top) place a shunt around the repeat magnet 131. 1

It will now be assumed that the switch 168 is in its ri htward ositionto )lace the control of the transmitter under the keyboard. Assume nowthat the wiper 115116 of the sunflower is on sunflower contacts A andthe F key is depressed. This closes the through Wires 167 167", 167,

keyboard 'eontacts 162;164 and 163 165:

v outer bus-ring 167" of tlie keyboard thence F contacts 163 -165 andthereby closingthe line again, Which resame -lett'er to be printedagain, Evidently across the outer outer-contact F at thesunfloWer,"-Wiper 8'9, inner contactQ, wire '2, terminals 168 and 168 ofswitch 168, Wire 168?, inner F contacts 1'6216-l at the keyboardto innerbus- 166 and fuse 166 'to main 110i); The circuit of clutch 109 istherefore closedbyl'relay 110 and the Wiper is arrested on contacts Fthereby prolonging the impulse then flow inp; over the line and causingthe tick'erstoprint. When another key is depressed a 1 i Vantage istaken or-this use to select either similar cycleof operations is carriedout Aswill be seen fromrig; 1, oneside' of the sourceof'currentconnectsto one annular bus 166 and the other side of'the source connects to bus167, thedepression of a single key connects by a-s'i'ngle operationoneside of the source selectively, to the inner con-- tacts 1, 2, 8 or 4 ofthe sunflower'and' also rselefcti'vely connects the other sideof thesource to, a particular-contactof an outer set of the sunflower which asbefore stated, is connected in parallel With the correspondingrespective contacts of the other outer sets. In this Way, the dualselection is effected at the sunflower. The keybbardcirouit controllertherefore provides twodouble circuit 'controllerswith two sietSuofcontacts lea let) and lea let; contacts 1 3 and '165arc furthersubdivided into groups eorre spending to the group's or'sets ofxoutercontactsupon,the sunflower and contacts 162 and 164;are alsosubdividedinto group'sor' 7 sets which innu'inb'er correspond to theinner 4contacts upon the sunflower.

To bl'lll'g the tickers and transmitter into unison the operatorsimply'keqps hishands;

printed.

oil the keyboard;thereby keepingiall'pkey board circuits-open and causng the iper to rotate uninterruptedly, until he sees'the type Wheel of,his ownticker "brought to rest by i'ts unisonmechanism. He thendepresses the ,letters period key '(the upper period key in Fig. 2,corresponding to the letters period contacts on' the sunflower)whereupon the Wiper s arrested Onthelett'ers period contact the nexttime it comes to that contact, and the ticke'rs. all print a period,xactly as if he'had depressed the unison key onthe punching mechanism:At the center-of he keyboard, Figs. 2'

and 3, is aaiepeat key 16i8 .,';byJ hicl'1 the normally,closedpcontac'ts 169, 170,. can be separated. These contacts areinsseries With the normally closed repeat contacts 133, 137, hence torepeat aletterwithout' causing the sunflower wipervto make afcompleterevoludepresses flows fromfmain 101 thr ugh v the line circuit, whichWire 101, clutch relayllO, Wire 110 ,:"to the.

ring 166 and thence by" Wire, 166, resistance a source of current.

" keyof the letter which he desires torepeat (thereby keepingtheWiperstationary) and thefrepeat key 168*.This opens de e'nergizes thepress magnet 105 and-therefore causes the tape,

space.- He then releases the repeat key,

energizes the press magnet :and causes the thisfoperatio'nWill'bfirepeated as long as he depresses and releases-the repeat key."Itwillbe observed that the keysflof the transmitter keyboard, Fig. 2,bear letters and numerals,andthat there areftiyo period "keys. As thepractice With this particular a period is ,used after every *word system,or numberln M: of a blank .,space, and

row of cliaracters-on'the ticker type Wheel.

because the characters (PF, signifying preferred) next to be transmittedare letters and (at-fth'erticker). to be advanced one letter-.

hence the same row, of characters is used as .was employed "forprinting'erie. 7 But When PF hasbeen printed-the nextcharac,-

ters are numerals and hence theot-her row must be used. Accordingly,atter PF. the

figures period is transmitted. This letter, by means suchas described,inHiltz", Patent No. 1,085,125, bringslto theimpression point 'theperiod which is in the. figures row and .just before'the imprint ismade, causes the -figures row tobe selected, so that the fi'g- =uresperiodis printedl after PF and the. tickeris left in condition'to printfigures. Haulingprinted:

7 l the operator must shift back to the letters row in order to pr ntthe :Word steeland he therefore, after o transmits theletters period.Again after steelisprinted hetransmitsthe figures period so that the 127/27 can be;

We claim: 1 1-; A keyboard ,adapted for use in a printingtelegraph'system with agsuntlower type transmitter! comprisinga'plurality of, de-'" pressible keys, of a pluralityof electrical vcircuit controllers controlled by a'singl'e do pressed key, one circuitcontroller being adapted to select a par icularcircuit; from s one sideof a source of current and'anotlier circuit controller being adaptedictoselect another circuit from the othe 2. A keyboard'tor use incontrolling-a transmitter, of i printing telegraph ,coin- -pr1s1ng ajgroup ofclrcu t l controllers ar ranged in setsand coinprisingfkeyactuateo contact elementsfand. cooperating Contact elements, meanselectrically connecting all of certain, saidelcments together, and meansside of the electrically connecting groups of the other elements incommon circuits to form distinct ach set having its elementselectrically connected to each other but being disconnected from theother sets, another group of circuit controllers also arranged incorresponding sets and comprising key actuated contact elements andother cooperating contact elements, means electrically connectingcertain. of said elements in a common eircuit, and means electricallyconnecting the for etl'ecting a dual selecoion in a common. circuit byand upon the operation of asingle key.

transmitter ot a printing telegraph compris- 7 ing in combination, aplurality of depressible keys, a plurality of circuits to be controlledthereby comprising one group of circuits selectively controlled by adepressed key to selectively establish a circuit relation therebetweento a common line, and another plurality of circuits constituting anothergroup which also receive current from a common line, said respectivefirst and second mentioned commonlines receiving current oi" oppositepolarity, and means operable upon the depression of the same aforesaidkey for selectively connecting one of the aforesaid last mentionedcircuits to its common line.

5. A keyboard for use in controlling a printing telegraph transmitterwhich has in v combination with a group of circuits individuallyconnected to contact elements of a sunflower, and another group ofcircuits individually connected to other contact elements of thesunflower which are disposed in sets corresponding to the firstmentioned contacts and in which corresponding contacts of the respectivesets are connected in parallel, a pliuj'a. "i-y of depressible keys,and. means controlled by and upon the depression of a single key forcllecting a selective interconnection ot a source of current with one otthe first mentioned group of circuits and with one of the-secondmentioned group of circuits to ultimately select a. circuit and inaccordance with the conjoint selectiveiuterconnection ot the source toboth groups of circuits. 7

6. A keyboard for use in connection with printing telegraphtransmitters, comprising in combination with a plurality of depress 4. Akeyboard for use in controlling the ible keys, of a plurality ofdepressible key actuated contacts, said contacts being in dis tinctsets, and a pair of contacts one ineach set beingactuated upon thedepression ota single key, other contacts arranged in sets and. disposedtocoopera-te withf'tl e respective sets of key actuated contacts, meansinterconnecting each set of key actuatedjcontacts in a distinct commoncircuit, means electrically interconnecting a number or" theothercontacts to form a number of individual groups, each containing alikenumber of contacts with all of the contacts oiea'ch respective groupconnected together to a circuit which pertains to that group, and meansinterconnecting the respective contacts of the other set otsaid othercontacts to form a number of parallel sets. 7 V v 7. A keyboard for usein controlling a printing tele 'raph transmitter,comprising a pluralityof annularlydisposed depressible keys, a plurality of annular rows offixed contacts radially extending and annularly disposed pairs ofbladecontacts under the keys arrangedto be displaced in unison by thedepression of a single key into contact with pairs of individual fixedcontacts.

8. A keyboard for use with a printing telegraph transmitter comprisingin combination a pair of annular buses,-one receiving current at onepolarity from a sourceand the other receiving current at oppositepolarity from said source, a plurality of sets of key actuated contactscarried thereby, each set being carried by and electrically con-5 nectedto its own-associated.bus, and a plurality of individual contactsarranged in pairs for cooperation with respective pairs of key actuatedcontacts and plurality of depressible keys for etl'ecting t 1e conjointoper-; ation of a pair of key actuated contacts, one being in one setand theother in the other set. I

9. A keyboard for use with'a printing telegraph transmitter comprisingin'combinaw,

tion a plurality of depressible keys, a plurality of sets of keyactuated contacts arranged in pairs, each pair being conjointly operableby the depression of a single key, a plurality of annularbuses one foreach: set of key actuated contacts and each constituting a separatecommon conductor for the contacts oit its respective set, and aplurality I of sets of other contacts disposed lllpttll'fi torcooperation with the pairs ot key actuated contacts upon theiractuation.

10.'Tlie invention sett'orth in claim 9 in which each; set of thecontacts which coop" erate with. the key acutatcd contacts are furthersubdivided, into a phrralityv of groups, and in which' the variouscontacts of one group of one-set areal! also electrically connected 1nd.common circu t and in which thevarious contacts of another group of theother setare electrically connected in depression of 11; A keyboard foruse wi telegraph transmitter, comprising in combination a pair ofannularly. and concentrically disposed bases eacliinsulated from theother, blade spring contacts disposed radially outwardly and inwardlyfrom. the

aforesaid bases, an annularly disposed series of depressible keysarranged to de press said spring contacts in pairs by the a single key,and a plurality of annular rows of fixed contacts disposed under theblade. contacts and arranged in pairs to individually Contact with "arespective blade contact upon their actuation.

' i by the depression of a single key forselectively establishingcircuit relations from one side of a source of current to a particularby a single key. i U

12. A keyboard adapted for use in con trolling the transmitter of aprinting, tele graphconiprising in combination a plurality ofdepressible keys and cooperating circuit controlling and selecting meanscontrolled thereby, said means comprising a plurality of key actuatedcontacts constituting a set of contact pairs, one side of said entiresetof contact pairs being connected in common to one side of a source ofcurrent and the other cooperating contacts of said pairs beingindividually connected to separate circuit lines which include a numberof parallel lines, another plura'lity'of key actuated contactsconstituting different other sets of contact pairs having one side ofall of the pairs of said sets connected in common to the other side ofthe aforesaid cominonsource of cur rent and having their othercooperating contacts of the pairs of each of the sets connected togetherand to lines which are ultito selectively connect other mately completedthrough the aforesaid linesrelated to the-other set of contacts tothereby provide a selection by the operation of a single key of circuitrelations which in number represent the product of the number of keyactuated contact pairs in one set times the number of other sets ofcontact airs of the other set.

13. A keyboard for use in controlling the transmitter of aprintingtelegraph comprising in combination a plurality of depressible keys andcooperating circuit controlling and selecting means operated by and uponthe operation of a single key, said cireuitcontrolling and selectingmeans comprising acertain group of circuit controlling and selectinginstrumentalities adapted to selectively establish various circuits toone side'of a common source of current by key action and another groupofcircuitcontrolling and selecting means being likewise adapted by theaction of the same single key circuitsto the other side of the samecommon source of th; a printing current whereby the ultimate circuitselection is conjointly controlled by the circuits which. areestablished from one side of the source as modified by the circuitrelations which are established with the other side of the same source.

14. A keyboard iorselectively establishing circuit relations to asunflower transmitter in a printing telegraph system wherein ll1-"CllVlClLlal complete circuits include parallel c rcuits tocorrespondingly disposed contacts of certain sets of sunflower contactsand 'whereii other circuits extend to other cooperating sunflowercontacts and comprising in combination, a plurality of depressible keys,and means brought into operation circuit of the first of theaforementioned circuits, and means also brought into operation by thedepression of the same key for "also selectively establishing selectivecircuit relations from the other side of the same source to one of theSGCOIlClHlGIltlOIlGd circuits whereby the selection of the ultimatecircuit at the sunflower is controlled conjointlyby the dual selectionefifected at both sides of the common source of current.

15. A keyboard transmitter for a printing telegraph comprising incombination with a plurality of depressible keys, a plurality of groupsof circuit controllers, each group comprising a plurality of sets of'keyactuated contact devices, the contact devicesoit .onegroup having thecorresponding individual contacts in the respective sets connected inparallel, and the contact devices of the other group having theindividual contacts of each set connected in common to I 16. A keyboarddevice foraprinting telegraph with depressible keys and circuitcontrolling means controlled thereby, a multiplicity of circuitsassociated with said cirsaid circuit controlcuit controlling means,

: ling means having provisions brought into operation by the depressionof forefit'ecting circuit selections to the a'fore a single key saidcircuits in a dual manner so that one selection of the circuits.coordinates with 'anotlier'selection of the circuits for the ult- Inateestablishment and selection of a single controlling circuit. v I Intestimony whereof we hereto afiix our signatures.

' GEORGE S. HILTZ.

'VVILLIAM F. PURCELL.

